20 Most Recent KitchenAid KHMS155L Microwave Oven Questions & Answers


F2 is a membrane switch error.

1. Unplug microwave oven or disconnect power.
2. Replace membrane switch.
3. If problem persists, replace electronic control.
4. Replace all parts and panels before operating.
5. Plug in microwave oven or reconnect power.

The answer to your question is YES. I would venture to say the PART is - but not the labor. You would need to read your warranty to confirm.

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KitchenAid... | Answered on Sep 05, 2013


It's not possible to reset it. You have a failing membrane keypad, and the only solution is to replace the keypad.

Since you didn't post the full model number with suffix, I can't give you a step-by-step answer, but I should be able to cover it all for you.

On some models, you order just the keypad itself. I have uploaded a handy guide with pictures showing you what's typically involved.

On other models, you order the control panel frame assembly, which comes with a new keypad already mounted on it. This costs more, but it's much easier.

There is a YouTube video here showing how to remove a typical over the range control panel assembly in under 5 minutes.

Then carefully detach the membrane keypad strip:

40716d4.jpg

Some connectors have a lock.

positivelock.jpg
Then you remove your board (carefully since the display is made of glass) then place your board in the new frame.

You can find links to helpful exploded view diagrams and part ordering help here.

I recommend that you bookmark that link to your favorites.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

KitchenAid... | Answered on Jul 26, 2013


sounds like you have a carbon build up on the supports if food residue builds up it drys and turns to carbon and the microwaves arch on the carbon give them a good clean and see if that helps in you need to replace them you would need to contact kitchen aid for the parts hope this helps

KitchenAid... | Answered on Dec 11, 2012


Yes! the whole keypad control board will need to be replaced.

KitchenAid... | Answered on May 17, 2012


Hello,

Investigate these three areas if your microwave won't heat

Power Diode

A diode is an electronic component that readily passes current in one direction only and blocks the flow of current in the opposing direction. If your microwave's diode has become defective, your microwave will not heat. Test the diode to determine if this is the cause of your problem. Replace it if it is defective.

Testing a diode

NOTE: Before you test your diode, make sure your microwave is unplugged, and that you discharge the microwave's capacitor.

Whether it is shorted or open, a defective diode will most likely show some sign of defect. Defective diodes will usually emit an electrical burning smell, signifying its defectiveness. Also, it may have split in two, or it may exhibit a burned crack, or possibly even a blistered spot.

A shorted diode is indicated by a loud humming noise from the high voltage transformer, and no heat produced when a cook cycle is initiated. Whereas little or no heat produced in your microwave, with an absence of a humming noise is indicative of an open diode. In either case, the diode has to be replaced.

With your microwave unplugged, and your capacitor discharged, use extreme caution to remove the lead that leads to the capacitor. You can leave the ground connection attached. The side of the diode that goes to the ground is usually marked with a dot, stripe, or arrow. Set your ohmmeter to R x 10,000 or higher. Touch the positive meter probe to the anode and the negative meter probe to the cathode to measure the resistance across the diode terminals. Remember that the cathode is on the side that goes to the ground, which is often marked by a dot, stripe, or an arrow.

A normal diode, that is a non-defective diode, will read anywhere from 50,000 to 200,000 ohms. Differences in microwave make and model account for this large range in resistance readings.

Reverse the meter probes and measure resistance while touching the positive probe to the cathode and the negative probe to the anode. Reversing the probes like this should result in a reading of infinity. Unless a bleeder resistor is present. The presence of a bleeder resistor would produce a reading of the value of the resistor.

High Voltage Capacitor

A capacitor is an electrical device which stores electricity. A defective capacitor may be why your microwave is not heating. The capacitor will have to be tested to determine if this is the cause of your problem. A defective capacitor will have to be replaced before your microwave will work again. Make sure you discharge the capacitor before you test it, though.

Magnetron

A defective magnetron is the third possible cause of why your microwave is not heating. Test your microwave's magnetron. Replace it if it is defective.

Testing a magnetron

NOTE: Before you test this component, make sure your microwave is unplugged, and that you have discharged the capacitor.

There are two tests to conduct in order to determine whether or not a magnetron has become defective. If you receive results other than what are detailed below, you will have to replace your microwave's magnetron. Each test is described for you here:

TEST 1: Locate your magnetron and label each of the wires attached to it so that you know which wires are to be replaced where. Set your ohmmeter to the lowest resistance scale. Take a resistance measurement between each of the magnetron's terminals by touching each probe to one terminal each. Reverse the probes and take a second resistance measurement. Each measurement should read less than one ohm.

TEST 2: Set your ohmmeter to its highest resistance scale. Touch one of the meter's probes to a magnetron terminal. Touch the other probe to the metal magnetron housing. Take special caution to not touch the two probes together. This could result in an inaccurate reading. This test should produce a reading of infinity - indicating an open circuit.

Read the tips on the below links on how to replace your microwave oven's diode and how to discharge the capacitor.

http://www.fixya.com/support/r7088355-replace_microwave_ovens_diode

http://www.fixya.com/support/r7088317-discharge_microwave_ovens_capacitor

I hope the above is helpful.

Regards.

KitchenAid... | Answered on Nov 08, 2011

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